(Yagan, an indigenous language of Tierra del Fuego): The wordless yet meaningful look shared by two people who desire to initiate something, but are both reluctant to start.

Neither of you has mustered the courage to make a move, yet. Hands haven’t been placed on knees; you’ve not kissed. But you’ve both conveyed enough to know that it will happen soon… very soon, you've got mamihlapinatapei!